Burglar-alarm.



C. POSSENTI.

BURGLAR ALARM APPLICATION FILED Nov. 3o. |914.

l ,l 59,991 Patented Nov. 9, 1915.

Siwa/Wto@ COLUMBIA PLANOGRAPH cn..wAe=1uNGToN.n. c.

FEF S CINNA POSSENTI, OF NEW YORK, 1\T. Y.

BURGLAR-ALARM.

Application filed November 30, 1914.

To all 'u1/tom t may concern Be it known that I, CINNA PossnNTi,residing at New York, in the county of New York and State of New York,have invented certain new and useful lmprovements in Burglar-Alarms; andl do hereby declaro the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use thesame.

This invention relates to burglar alarms, and the primary object of theinvention is to provide a burglar' alarm ofsimple construction which maybe attached to any window or door of ordinary construction and which isset for automatic operation upon the opening of the window or door towhich it is attached.

Another object of this invention is to provide a burglar alarm asspecified which embodies a spring controlled trigger and a pair ofguiding plates for holding cartridge strips, which carry cartridges, andare positioned in alinement with said spring controlled trigger foractuation upon the opening of the window or door to which the device'isattached.

llVith the foregoing and other objects in View this invention consistsin such novel features of construction, combination and arrangement ofparts as will be hereinafter more fully described, illustrated in theaccompanying drawings and claimed.

In describing the invention in detail reference will be had to theaccompanying drawings wherein like characters designate like orcorresponding parts throughout the several views, and in which :a

Figure 1 is a Sectional view through the improved burglar alarm showingthe same applied to a window. Fig. 2 is a detail perspective view of theburglar' alarm, and Fig. 3 is a cross sectional view on the line 3 3 ofFig. 2.

Referring more particularly to the drawings, 1 designates the supportingbody portion of the burglar alarm which is constructed of a piece ofsheet metal and has one end thereof rolled as is shown at 2 to form ahandle for engaging the body portion 1 of the burglar alarm forattaching or removing it from a window or door. The plate of which thebody portion 1 is formed is bent substantially equidistant of its endsas is shown at 3 to form substantially a V-shaped member and it has theSpecification of Letters Patent.

Patented Nov. 9, 1915.

seriai No. 874,789.

rl`he upper side 6 of the il-shaped bodyy portion 1 has a pair of platesor straps 7 and 8 secured to the upper surface thereof at the forwardend of the plate, which straps have their facing ends bent upwardly andspaced from the upper surface of the sides 6 for forming a retainingguideV for a cartridge carrying strip 9. The carrying strip 9 may beconstructed of any suitable material and it has a plurality of explosivecartridges 10 secured to the upper surface thereof at spaced intervalsalong its length so that they may be fed at desired times forwardly uponthe upper surface of the plate 6 and positioned for being struck by thetrigger plate 11.

The trigger plate 11 is substantially triangular shaped and it hasprojections 12 and 13 formed upon the corners of its base, whichprojections are rolled upon themselves for forming pin encompassingsleeves. The pin encompassing sleeves receive in the bores thereof a pin14, which is carried by the upturned sides 4 and 5 of the upper section6 of the body portion 1. The pin 14 has a spring 15 coiled thereabout,one end of which spring is secured to the plate 6 as is shown at 16 andthe other end of the spring is secured to the trigger plate 11 as isshown at 17, for causing the same t0 spring over and strike one of thecartridges carried bv the strip 9, when the trigger is relieved fromrestraint.

In the operation of the improved burglar alarm; the body 1 is placedbetween the meeting edges ofa pair of doors, between the meeting edgesof a door and door frame, a pair of windows or between the lower edge ofa window sash and the frame therefor as is clearly shown in Fig. 1 ofthe drawings. Vhen the plate or body 1 is inserted between any movablestructures in a house construction as has hereinbefore been mentioned,the trigger plate 11 is moved as is shown in Fig. 2 of the drawings, andheld against the action of the spring 10, holding the spring undertension b v having the trigger plate engaged by the window or sash or bythe door structure, so that imme Copies of this patent maybe obtained'for diately` upon the opening `of themdoor or.

window, the spring l5 will be released from tension, Which will cause'the trigger 11 't'o spring around 1n an are and strike Aone of thecartridges 10 which are carried by the guiding plates .and Stexplodingthe cartridge-and making a noise like the shot of a pistol for either'frightening the burglar away or notifying the persons Within the housewhen someone 1s endeayorrn'g .fto

' enter therein.

- claimed.

What is claimed is t 'In a `burglar alarm, a substantially V- shapedVbody portion constructed of a plate of resilient metal, one `end ofVone side of 'said V-shaped v4body portion being curved fornita handle;a pair of straps secured to the outer surface .of the other side of said25 said pin and lhaving vrone -end secured Mto said hammer, the 'otherend of lsaid spring being 'secured to Ithe Vshaped body portion fon'the'operation of said 'hammer `causing it ito iy over and strike saidcartridge upon release g "In testimony whereof aiiiX 'my signature inpresence of vtwo Witnesses.

. (ENNA PQSSENTL Witnesses:

Menon H. MILLER, SARAWV. MILLER.

iive cents each, Vaddressing; the v Commissioner of lPatents,WashingtonyDaC. v

